js 为空或不是对象的错误

代码如下,因太长分为两段。 代码运行正常的话会在页面中显示出来，但是我的代码没有显示出来。
具体代码如下：

<script type="text/javascript">
<asp:Repeater ID="Repeater13" runat="server">
<ItemTemplate>

var static_array = new Array();
static_array.push({link:'Show_BJ.aspx?ID=<%# Eval("ID")%>', title:'<%# Eval("PinMing")%>',price:'<%# Eval("ChanDi")%>', postDate:'<%# Eval("RiQi")%>', company:'<%# getString(Eval("FaBuGongSi").ToString(),7) %>',phone:'0517-83351331'});
</ItemTemplate>
</asp:Repeater>
</script>

<script type="text/javascript">
<asp:Repeater ID="Repeater14" runat="server">
<ItemTemplate>

var move_array = new Array();
move_array.push({link:'Show_BJ.aspx?ID=<%# Eval("ID")%>', title:'<%# Eval("PinMing")%>',price:'<%# Eval("ChanDi")%>', postDate:'<%# Eval("RiQi")%>', company:'<%# getString(Eval("FaBuGongSi").ToString(),12) %>',phone:'0517-83351331'});
</ItemTemplate>
</asp:Repeater>
</script>
<script type="text/javascript">

var s_t=static_array.length;
var s_d=document.getElementById("fx");
alert("fx");
for(i=0;i<s_t;i++){
var sul;
var sul=document.createElement("ul");
sul.innerHTML='<li class="scroll_title wt25"><img border="0" align="absmiddle" src="images/jian.gif"/> <a href="'+static_array[i].link+'" target="_blank">'+static_array[i].title+'</a></li><li class="scroll_price wt20">'+static_array[i].price+'</li><li class="scroll_postDate wt15">'+static_array[i].postDate+'</li><li class="scroll_company wt15">'+static_array[i].company.substring(0,7)+'</li><li class="scroll_company wt15">'+static_array[i].phone.slice(0,13)+'</li>';
s_d.appendChild(sul);
}

var t=move_array.length;
var r=Math.floor(t/10);
var d=document.getElementById("cg");
var times=0;
for(i=0;i<r;i++){
var div,ul;
div=document.createElement("div");
div.setAttribute("id","div"+i);
div.style.display="none";
for(j=0;j<10;j++){
var ul=document.createElement("ul");
ul.innerHTML='<li class="scroll_title wt25">'+move_array[i*10+j].title+'</li><li class="scroll_price wt20">'+move_array[i*10+j].price+'</li><li class="scroll_postDate wt15">'+move_array[i*10+j].postDate+'</li><li class="scroll_company">'+move_array[i*10+j].company+'</li>';
div.appendChild(ul);
}
d.appendChild(div);
}
var w=r-1;
document.getElementById("div"+w).style.display="";

window.setInterval(function(){
for(i=0;i<=w;i++){document.getElementById("div"+i).style.display="none";
}
times=(times==w)?0:times+1;
document.getElementById("div"+times).style.display="";
},5000);
</script>
错误提示：S_D为空或不是对象

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